Gmos 04 Wiring Diagram - ricardolevinsmorales Assortment of gmos 04 wiring diagram. A wiring diagram is a streamlined conventional photographic depiction of an electric circuit. It reveals the parts of the circuit as simplified forms, and also the power as well as signal links in between the gadgets.[PDF] GMOS-04 Table of Contents GM Data Interface 2000-2013 GMOS-04 5 Installing the GMOS-04 With the key in the off position: • Connect the 16-pin harness with stripped leads, and the GMOS-04 harness, into the interface. • Connect the GMOS-04 harness to the wiring harness in the vehicle. Note: If using the ASWC-1, connect it after you initialize and test the GMOS-04, with the key in the off position.